溶液聚合的α-烯烃高分子减阻剂的表征  

Characterization of α-Olefin Polymer DRA via by Solution Polymerization

作　　者：刘辉[1] 宋高杰[1] 管民[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《应用化学》2008年第8期918-921,共4页Chinese Journal of Applied Chemistry

基　　金：新疆自治区高技术研究发展计划(200416117);管输油品减阻剂的研制与规模化生产基金资助项目

摘　　要：采用环道装置对不同条件下研制的α-烯烃高分子减阻剂进行了表征。结果表明,合成时所用溶剂对减阻剂的减阻效果有很大影响,在质量浓度为20mg/L和溶剂为环己烷时,减阻剂的最高减阻率为62.3%;溶剂为正己烷时,最高减阻率为50.33%;随剪切次数的增加,减阻剂的减阻率迅速下降。用粘度法测定了高分子减阻剂的特性粘数、等效球的密度和胶粒浓度。结果表明,特性粘数小,等效球的密度大,胶粒浓度小,分子量大,减阻效果好;反之则效果差。Characterization of α-olefin polymer DRA（ drag reduction agent） prepared by solution polymerization under different conditions was carried out by loop system. The results showed Drag reduction was affected greatly by the solvent used in the synthesis. When the solvent was Cyclohexane, drag reduction rate was up to 62. 3% , but 50. 33% when the solvent was Hexane; DR% of three samples droped rapidly with increasing shearing time. On those bases, the effects of the polymer characteristics on drag reduction were studied further. Particle density and concentration were obtained through viscosimetry. The results showed when characteristic viscosity was smaller, the density was higher, the concentration was lower, and the ：molecular mass was higher, the drag reduction result was better. Otherwise, drag reduction result was worse.

关 键 词：高分子减阻剂 抗剪切性 胶粒浓度 Α-烯烃 

分 类 号：O632[理学—高分子化学]